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Awọn boluti Irin Alagbara: Hex Bolts ati Awọn giredi Ohun elo
2026-08-05
1. Ifihan
Awọn boluti irin alagbara darapọ resistance ipata atorunwa pẹlu agbara ẹrọ, ṣiṣe wọn ṣe pataki kọja ikole, omi okun, ṣiṣe ounjẹ, ati awọn ile-iṣẹ iṣoogun. Ko dabi awọn ohun elo irin erogba ti o nilo awọn ideri aabo, irin alagbara, irin n gba idiwọ ipata rẹ lati inu Layer oxide chromium ti ara-iwosan. Itọsọna yii ni wiwa awọn aaye pataki meji julọ: apẹrẹ bolt hex ati yiyan ipele irin alagbara.
2. Hex boluti
Awọn boluti Hex ṣe ẹya ori ti o ni apa mẹfa ti o mu ki gbigbe iyipo ti o munadoko ṣiṣẹ nipasẹ awọn wrenches boṣewa tabi awọn iho. Apẹrẹ naa ni ori onigun mẹgun kan, shank ti a ko ka, ipin ti o tẹle ara, ati sample chamfered. Awọn anfani bọtini pẹlu agbara iyipo giga, iraye si gbogbo agbaye, ṣiṣe iṣelọpọ, atunlo, ati ibamu pẹlu awọn ajohunše agbaye (ISO 4014, DIN 933, ASTM A325).
Tabili 1. Standard Hex Bolt Iwọn (Irin Alagbara)
| Iwon Iforukọsilẹ | Pitch Opopo (TPI) | Ìbú orí (mm) | Agbara Fifẹ (MPa) |
| 1/4 - 20 | 20 | 11.1 | 520 |
| 3/8 - 16 | 16 | 14.3 | 520 |
| 1/2 - 13 | 13 | 19.1 | 520 |
| 3/4 - 10 | 10 | 28.6 | 520 |
3. Irin alagbara, irin Grades
Irin alagbara, irin fasteners ti wa ni classified si mẹrin awọn idile: austenitic (304, 316 — ti kii-oofa, ga ipata resistance), ferritic (430 — magnetic, ti ọrọ-aje), martensitic (410 — hardenable, dede ipata), ati ojoriro-hardening (17-4PH — ga agbara). Labẹ ISO 3506, awọn onipò lo koodu nọmba lẹta kan nibiti A = austenitic, C = martensitic, ati pe nọmba naa tọka si kilasi agbara fifẹ (50/70/80).
Table 2. Wọpọ Irin alagbara, irin onipò fun boluti
| Ipele | ISO Kilasi | Fifẹ (MPa) | Ipata koju. | Awọn eroja bọtini | Ohun elo Aṣoju |
| 304 | A2-70 | 700 | O dara | 18% Kr, 8% Ni | Idi gbogbogbo, ounjẹ |
| 316 | A4-70 | 700 | O tayọ | 16% Kr, 10% Ni, 2% Mo | Marine, kemikali, egbogi |
| 410 | C3-80 | 550 | Déde | 12% Kr | Cutlery, falifu |
| 17-4PH | A4-80 | 800 | O dara | 16% Kr, 4% Ni, 4% Cu | Aerospace, agbara-giga |
3.1 Ite Yiyan nipa Ayika
Table 3. Niyanju onipò nipa Service Ayika
| Ayika | Niyanju ite | Idi |
| Ninu ile / Gbẹ | 304 (A2) | Deede ni idiyele kekere |
| Ita / Etikun | 316 (A4) | Mo koju ikọlu kiloraidi |
| Ohun ọgbin Kemikali | 316L / 904L | Superior acid resistance |
| Awọn iwulo Agbara giga | 17-4PH (A4-80) | Òjò-líle |
4. Awọn ero pataki
Ibanuje: Awọn gilaasi Austenitic (304, 316) ni itara si mimu okun nigba mimu. Lo awọn agbo ogun atako-gbigba tabi awọn isọdọmọ ipele ti o yatọ (Bolt A2 pẹlu A4 nut) lati dinku.
Ifarabalẹ: Itọju Acid (ASTM A967) yọ irin ọfẹ kuro ati ki o mu ki Layer oxide ṣe, imudarasi resistance ipata lẹhin iṣelọpọ.
Iṣoofa: Awọn giredi Austenitic kii ṣe oofa nigbati o ba jẹ anneal ṣugbọn o le di oofa kan lẹhin iṣẹ tutu. Ferritic ati awọn giredi martensitic jẹ oofa ti ara.
5. Ipari
Irin alagbara, irin hex boluti dapọ ilowo jiometirika oniru pẹlu metallurgical versatility. Lati Ipese ti ọrọ-aje 304 fun lilo gbogbogbo si 17-4PH agbara-giga fun awọn ohun elo ti o nbeere, ti o baamu ipele ti o tọ si agbegbe iṣẹ ni idaniloju iṣẹ ṣiṣe ti o dara julọ ati igbesi aye gigun.
